Change valve and seat for mechanical refrigeration



y 1934- c. M. GOODLAND 60,628

CHANGE VALVE AND SEAT FOR MECHANICAL REFRIGERATION Filed July 29. 1932INVENTOR ATTORNEY Patented May 29, 1934 UNITED STATES CHANGE VALVE ANDSEAT FOR MECHANI- CAL REFRIGERATION Charles M. Goodland, Rock Island,Ill.

Application July 29, 1932, Serial No. 625,963

1 Claim.

The invention relates to a valve and seat and more especially to achangeable valve and seat for use in mechanical refrigerating systems.

The primary object of the invention is the provision of a valve and seatof this character wherein the same in their mounting will permitchanging without requiring pumping the refrigerant agent from therefrigeration system and Without the necessity for disconnecting anypipe line or lines in the refrigeration equipment so that the use of agas mask is dispensed with and also the loss of any material amount ofgas avoided.

Another object of the invention is the provision of a valve and seat,wherein protection is had thereto against damage during shipment of thevalve, particularly when installed in a refrigeration system of theiceless or mechanical kind and also permits repairs, replacement orinstallation with dispatch and without removal of the refrigerant fromthe system or the boiler or boilers thereof and also eliminates allpossibility of air or moisture entering the boiler or boilers.

A further object of the invention is the provision of a valve and seatof this character which are simple in construction, readily and easilychangeable, thoroughly reliable and efficient in the operation thereof,easily repairable, and inexpensive to manufacture and install.

With these and other objects in View, the invention consists in thefeatures of construction,

combination and arrangement of parts as will be hereinafter more fullydescribed in detail, il-

lustrated in the accompanying drawing, which discloses the preferredembodiment of the invention, and pointed out in the claim hereuntoappended.

In the accompanying drawing:

Figure 1 is an elevation of a header as mountable in a boiler or boilersof a refrigerating system showing the valve constructed in accordancewith the invention.

Figure 2 is a side elevation thereof with the a valve in associationwith a float.

Figure 3 is an enlarged vertical longitudinal sectional view through thevalve and its seat.

Figure 4 is a sectional view on the line 4-4 of Figure 3 looking in thedirection of the arrows. Figure 5 is a sectional view on the line 5-5 ofFigure 3 looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout theseveral views in the drawing.

Referring to the drawing in detail, A designates generally a header fora boiler of a refrigerating system of the iceless or mechanical type andB the float operative Within the boiler (not shown). Carried by theheader is the change valve and seat constituting the present inventionand hereinafter fully described.

The valve comprises a body 10 which is fitted in the header A and isformed with external threads 11 for a clamping nut 12 in which isarranged a rotary valve 13, the same being held matched with the body 10through the medium of the nut 12. Within the rotary valve 13 is aremovable valve seat 14, the same being of substantially conicalplug-like form and fits a like socket 15 formed in said rotary valve 13.

Formed in the valve body 10 is a guide passage 16 for a valve stem 17pivoted to the arm 18 of the float B. This stem operates upon a needlevalve 19 fitted within the valve seat 14 for controlling the port 20 asshould be obvious from Figure 3 of the drawing.

The arm 18 of the float B is pivotally supported by a bracket 21 fittedwith a valve body 10 and this bracket as Well as the float B is ofconventional construction.

Mounted on the outer face of the rotary valve 13 is the valve seat clamp22 removably secured by a seat clamp stud 23 upon the rotary valve 13,the clamp being disposed against the valve seat to retain the samewithin the socket 15, the valve seat 14 being formed with a wrenchengaging lug 24 and likewise the stud .23 is provided with a wrenchengaging lug 25 so that the latter can be loosened or disengaged fromthe rotary valve 13 to release the clamp 22 in the use of a wrench,while the lug 24 will permit such wrench to be used for the loosening ofthe valve seat 14 or its removal from the rotary valve 13.

The rotary valve 13 has a ground joint with the valve body 10 and whenit is desired to remove the seat 14 and the needle valve 15 without theescape of refrigerant through the lead 26 the nut 12 is loosenedsufficiently to permit the rotary valve 13 to be turned a quarter turn,whereupon the lead 26 and the passage 16 will be closed. Thereafter theclamp 22 can be released by the stud 23 and the valve seat 14 removed aswell as the needle valve 19. These parts may be readily changed in thismanner or the same may be cleaned or reground for the proper functioningthereof. The seat 14 when cleaned, repaired or a new one may be placedin the socket 15 in the rotary valve 13 and the clamp 22 secured theretoin relation to said seat to make the same secure, whereupon the valve 13is readjusted for the opening of the lead 26 in the passage 16 andthereafter the nut 12 is tightened to make secure against movement saidrotary valve.

During shipment of the valve and its seat in a refrigerator of theiceless or mechanical type the seat 14 can be adjusted by rotating thevalve 13 to shift the needle valve 19 out of contact with the valve stem16 and thereby protecting the said needle valve 19 and its seat fromdamage during shipment.

It should be obvious that the needle valve and its seat may be changed,renewed or replaced without pumping the refrigerant agent in therefrigerating system out of the boiler or boilers and withoutnecessitating the opening of the boiler or closing any other valve orvalves in the equipment of the refrigerating system or disconnecting anypipe line or lines of such equipment 1 and eliminating the use of a gasmask and the possibility of air or moisture entering the boiler, thechange, renewal or replacement being effected with dispatch and with theloss of minimum or no gas.

What is claimed is A valve of the kind described comprising inner andouter sections adapted for abutting relation to each other, the innersection being externally threaded for the mounting of the same withrespect to a fluid source, the outer section forming a rotary valve andbeing reduced at its outer end, a collar receiving the outer and innersections and threaded with the latter and having an outer open front forreceiving the reduced outer end of the outer section, a plug-like valveseat removably fitted in the outer section and having a turning stud atits lower end projected beyond the reduced outer end. of the outersection, a needle valve in said seat for controlling a port through saidseat and for coaction with a float arm, the said. outer and innersections having passages controlled by the outer section, and means onthe outer section and engaged with the removable seat to hold it fittedin the outer section and also to expose the turning stud of said seat.

CHARLES M. GOODLAND.

